Device for measuring web tension

Details Device for measuring web tension Device for measuring web tension

1985-04-18

1986-12-16

LaRoche, Eugene R.

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

250224, 250561, 7386239, G01V 904, G01L 504

Patent

active

046299025

ABSTRACT:
A device for measuring web tension of a continually movable web transported on a rotated cylindrical roller of a printing machine includes two eccentrics connected to two ends of the roller for supporting the latter for rotation and each includng a supporting pin. The supporting pin of one of the eccentrics has its end rigidly connected to a machine frame and is able to twist proportionally to the web tension. A lever having one end rigidly connected to the twistable supporting pin has its other end positioned between a light transmitter and a light detector of an optoelectronic sensor which detects the amount of twisting of the supporting pin.

REFERENCES:
patent: 4496428 (1985-01-01), Wells

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